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1.
J Patient Rep Outcomes ; 7(1): 101, 2023 Oct 12.
Artículo en Inglés | MEDLINE | ID: mdl-37823948

RESUMEN

PURPOSE: The aim of this study was to create a model of patient-centered outcomes with respect to self-management tasks and skills of patients with a tracheostomy in their home setting. METHODS: A scoping review using four search engines was undertaken (Medline, CINAHL, PsycINFO, Cochrane Library) to identify studies relevant to this issue and published since 2000. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses Statements for Scoping Reviews (PRISMA-ScR), the Joanna Briggs Institute (JBI) approach of conducting and reporting a scoping review, and the Participants, Concept, Context (PCC) scheme were employed. The following elements of the framework synthesis study data were screened, and presented based on the self-management model of Lorig and Holman. RESULTS: 34 publications from 17 countries met the criteria for study inclusion: 24 quantitative, 8 qualitative and 2 mixed methods designs. Regarding the dimensions of self-management, 28 articles reported on "managing the therapeutic regimen", 27 articles discussed "managing role and behavior changes", and 16 articles explored "managing emotions". A model of self-management of patients with tracheostomy was developed, which placed the patient in the center, since it is this individual who is completing the tasks and carrying out his or her skill sets. CONCLUSION: This scoping review represents the first comprehensive overview and modeling of the complex self-management tasks and skills required of patients with tracheostomy in their home setting. The theoretical model can serve as a cornerstone for empirical intervention studies to better support this patient-centered outcome for this population in the future.


Asunto(s)
Automanejo , Traqueostomía , Humanos , Masculino , Femenino , Pacientes , Investigación Empírica
2.
Eur Arch Otorhinolaryngol ; 280(4): 1983-1990, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36478116

RESUMEN

PURPOSE: The primary aim of this retrospective study was to analyze the progression of descending necrotizing mediastinitis (DNM), evaluate the impact of comorbidities on complications and mortality and to observe long-term consequences of DNM on dysphagia and measurements quality of life. DNM is a serious infectious disease that requires multimodal treatment. Current literature varies in conclusions of risk factors, management and outcome of DNM. In addition, little is known about persisting effects on quality of life. METHODS: Retrospective data analysis of 88 patients with DNM representing the largest single-center study. Recording data of patients and diseases as well as clinical progression from 1997 to 2018. Two questionnaires were sent to the participants to measure quality of life and to detect dysphagia. RESULTS: 88 patients were included. The most frequently found pathogen were Streptococcus spp. (52%). 75% of the patients underwent multiple surgeries, mean count of surgical procedures was 4.3 times. 84% received intensive care treatment. Median length of stay on the intensive care unit was 7 days. 51% had pre-existing comorbidities associated with reduced tissue oxygenation (e.g., diabetes). The most common complication was pleural effusion (45%). During the observation period, the mortality rate was 9%. 12 questionnaires could be evaluated. 67% of the participants were affected by dysphagia at the time of the survey. CONCLUSIONS: Descending necrotizing mediastinitis (DNM) is a severe disease requiring an immediate initiation of multimodal treatment. Although quality of life usually isn´t impaired permanently, dysphagia may often persist in patients after DNM.


Asunto(s)
Trastornos de Deglución , Mediastinitis , Humanos , Mediastinitis/diagnóstico , Mediastinitis/etiología , Mediastinitis/terapia , Estudios Retrospectivos , Estudios de Seguimiento , Trastornos de Deglución/diagnóstico , Trastornos de Deglución/etiología , Trastornos de Deglución/terapia , Calidad de Vida , Drenaje/métodos , Necrosis/etiología , Necrosis/terapia
3.
Front Immunol ; 13: 959002, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36275744

RESUMEN

Common variable immunodeficiency (CVID), characterized by recurrent infections, low serum class-switched immunoglobulin isotypes, and poor antigen-specific antibody responses, comprises a heterogeneous patient population in terms of clinical presentation and underlying etiology. The diagnosis is regularly associated with a severe decrease of germinal center (GC)-derived B-cell populations in peripheral blood. However, data from B-cell differentiation within GC is limited. We present a multiplex approach combining histology, flow cytometry, and B-cell receptor repertoire analysis of sorted GC B-cell populations allowing the modeling of distinct disturbances in GCs of three CVID patients. Our results reflect pathophysiological heterogeneity underlying the reduced circulating pool of post-GC memory B cells and plasmablasts in the three patients. In patient 1, quantitative and qualitative B-cell development in GCs is relatively normal. In patient 2, irregularly shaped GCs are associated with reduced somatic hypermutation (SHM), antigen selection, and class-switching, while in patient 3, high SHM, impaired antigen selection, and class-switching with large single clones imply increased re-cycling of cells within the irregularly shaped GCs. In the lymph nodes of patients 2 and 3, only limited numbers of memory B cells and plasma cells are formed. While reduced numbers of circulating post GC B cells are a general phenomenon in CVID, the integrated approach exemplified distinct defects during GC maturation ranging from near normal morphology and function to severe disturbances with different facets of impaired maturation of memory B cells and/or plasma cells. Integrated dissection of disturbed GC B-cell maturation by histology, flow cytometry, and BCR repertoire analysis contributes to unraveling defects in the essential steps during memory formation.


Asunto(s)
Inmunodeficiencia Variable Común , Humanos , Centro Germinal , Linfocitos B , Isotipos de Inmunoglobulinas , Antígenos , Receptores de Antígenos de Linfocitos B/genética
4.
Int J Mol Sci ; 23(1)2021 Dec 25.
Artículo en Inglés | MEDLINE | ID: mdl-35008649

RESUMEN

We describe a sequential multistaining protocol for immunohistochemistry, immunofluorescence and CyTOF imaging for formalin-fixed, paraffin-embedded specimens (FFPE) in the formalin gas-phase (FOLGAS), enabling sequential multistaining, independent from the primary and secondary antibodies and retrieval. Histomorphologic details are preserved, and crossreactivity and loss of signal intensity are not detectable. Combined with a DAB-based hydrophobic masking of metal-labeled primary antibodies, FOLGAS allows the extended use of CyTOF imaging in FFPE sections.


Asunto(s)
Epítopos/química , Técnica del Anticuerpo Fluorescente/métodos , Formaldehído/química , Adhesión en Parafina/métodos , Coloración y Etiquetado/métodos , Fijadores/química , Humanos , Inmunohistoquímica/métodos , Fijación del Tejido/métodos
5.
Int J Mol Sci ; 21(17)2020 Aug 19.
Artículo en Inglés | MEDLINE | ID: mdl-32824917

RESUMEN

Breast cancer tumor draining lymph nodes (TDLNs) display distinct morphologic changes depending on the breast cancer subtype. For triple-negative breast cancers (TNBC), draining LNs display a higher amount of secondary lymphoid follicles, which can be regarded as a surrogate marker for an activated humoral immune response. In the present study, we focus on PD1+ T-follicular helper cells (Tfh) in TDLNs of TNBC, since PD1+ Tfh are drivers of the germinal center (GC) reaction. We quantified PD1+ Tfh in 22 sentinel LNs with 853 GCs and interfollicular areas from 19 patients with TNBC by morphometry from digitalized immunostained tissue sections. Overall survival was significantly worse for patients with a higher number and area density of PD1+ Tfh within GCs of TDLNs. Further, we performed T-cell receptor gamma chain (TRG) analysis from microdissected tissue in the primary tumor and TDLNs. Eleven patients showed the same TRG clones in the tumor and the LN. Five patients shared the same TRG clones in the tumor and the GCs. In two patients, those clones were highly enriched inside the GCs. Enrichment of identical TRG clones at the tumor site vs. the TDLN was associated with improved overall survival. TDLNs are important relays of cancer immunity and enable surrogate approaches to predict the outcome of TNBC itself.


Asunto(s)
Centro Germinal/patología , Ganglio Linfático Centinela/patología , Linfocitos T Colaboradores-Inductores/metabolismo , Neoplasias de la Mama Triple Negativas/patología , Adulto , Anciano , Femenino , Centro Germinal/metabolismo , Humanos , Persona de Mediana Edad , Receptor de Muerte Celular Programada 1/genética , Receptor de Muerte Celular Programada 1/metabolismo , Ganglio Linfático Centinela/metabolismo , Análisis de Supervivencia , Neoplasias de la Mama Triple Negativas/metabolismo
6.
Radiat Oncol ; 15(1): 80, 2020 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-32293497

RESUMEN

PURPOSE: To analyze management and outcomes following (chemo)radiation therapy in patients with cervical lymph node metastases from an unknown primary site (CCUP) in a large single-center cohort. METHODS: Between 2008 and 2019, 58 patients with CCUP were treated with (chemo)radiation therapy at the University of Freiburg Medical Center and were included in this analysis. Overall survival (OS), locoregional progression-free survival (PFS) and distant metastasis-free survival (DMFS) were calculated using the Kaplan-Meier method. The use of diagnostic procedures and their impact on oncological outcomes was analyzed by Cox regression, and treatment-related toxicities were quantified. RESULTS: Median follow-up was 29.9 months (range 4.6-121.9). Twenty-one patients (36.2%) received definitive RT, 35 (60.3%) underwent adjuvant RT, and 2 (3.4%) were treated for oligometastatic disease. Concurrent chemotherapy was prescribed in 40 patients (69.0%). 89.6% of patients completed the prescribed RT, and 65.0% completed the prescribed simultaneous chemotherapy. Locoregional recurrence was observed in 7 patients (12.1%) and distant metastases in 13 cases (22.4%). OS was 81,1, 64.9% and 56,6% after 1, 3 and 5 years, respectively. Univariate analysis of age, gender, extracapsular spread, tumor grading, neck dissection, diagnostic utilization of 18F-fluorodeoxyglucose positron-emission tomography and concomitant chemotherapy showed no effect on OS (p > 0.05 for all), while smoking was significantly associated with decreased survival (p < 0.05). There was a trend towards impaired OS for patients with advanced nodal status (pN3) (p = 0.07). Three patients (5.2%) experienced grade 3 radiation dermatitis, and 12 (22.4%) developed grade 3 and 1 (1.7%) grade 4 mucositis. CONCLUSIONS: RT of the panpharynx and cervical lymph nodes with concurrent chemotherapy in case of risk factors demonstrated good locoregional control, but the metachronous occurrence of distant metastases limited survival and must be further addressed.


Asunto(s)
Neoplasias de Cabeza y Cuello/radioterapia , Neoplasias de Cabeza y Cuello/secundario , Ganglios Linfáticos/patología , Neoplasias Primarias Desconocidas , Adulto , Anciano , Anciano de 80 o más Años , Quimioterapia Adyuvante , Femenino , Neoplasias de Cabeza y Cuello/tratamiento farmacológico , Neoplasias de Cabeza y Cuello/cirugía , Humanos , Ganglios Linfáticos/cirugía , Masculino , Persona de Mediana Edad , Cuello , Radioterapia Adyuvante , Estudios Retrospectivos , Factores de Riesgo , Resultado del Tratamiento
8.
J Res Adolesc ; 30 Suppl 1: 4-14, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-30367691

RESUMEN

The present meta-analysis integrates results from 310 longitudinal studies on associations of the attainment of 10 developmental tasks with psychological symptoms (e.g., internalizing or externalizing symptoms, anxiety, and depression). Higher initial success with getting access to a peer group, building friendships, preparing for a future career, body acceptance, as well as developing a personal identity, a value system, and socially responsible behavior predicted lower levels of symptoms at follow-up and stronger declines of symptoms over time when controlling for initial symptom levels. Furthermore, higher initial symptom levels predicted lower attainment of these tasks at follow-up as well as lower progress in task attainment. In contrast, more initial romantic/sexual involvement predicted an increase in symptoms over time, while higher initial symptoms were related to an increase in romantic/sexual involvement. Associations with autonomy varied between different forms of autonomy, while acquisition of a gender role was not related with psychological symptoms.


Asunto(s)
Logro , Conducta del Adolescente/psicología , Relaciones Interpersonales , Adolescente , Ansiedad/psicología , Niño , Depresión/psicología , Femenino , Humanos , Estudios Longitudinales , Masculino , Psicología del Adolescente , Conducta Sexual/psicología , Adulto Joven
9.
Eur J Anaesthesiol ; 36(12): 963-971, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-31644514

RESUMEN

BACKGROUND: Good visibility is essential for successful laryngeal surgery. A Tritube with outer diameter 4.4 mm, combined with flow-controlled ventilation (FCV), enables ventilation by active expiration with a sealed trachea and may improve laryngeal visibility. OBJECTIVES: We hypothesised that a Tritube with FCV would provide better laryngeal visibility and surgical conditions for laryngeal surgery than a conventional microlaryngeal tube (MLT) with volume-controlled ventilation (VCV). DESIGN: Randomised, controlled trial. SETTING: University Medical Centre. PATIENTS: A total of 55 consecutive patients (>18 years) undergoing elective laryngeal surgery were assessed for participation, providing 40 evaluable data sets with 20 per group. INTERVENTIONS: Random allocation to intubation with Tritube and ventilation with FCV (Tritube-FCV group) or intubation with MLT 6.0 and ventilation with VCV (MLT-VCV) as control. Tidal volumes of 7 ml kg predicted body weight, and positive end-expiratory pressure of 7 cmH2O were standardised between groups. MAIN OUTCOME MEASURES: Primary endpoint was the tube-related concealment of laryngeal structures, measured on videolaryngoscopic photographs by appropriate software. Secondary endpoints were surgical conditions (categorical four-point rating scale), respiratory variables and change of end-expiratory lung volume from atmospheric airway pressure to ventilation with positive end-expiratory pressure. Data are presented as median [IQR]. RESULTS: There was less concealment of laryngeal structures with the Tritube than with the MLT; 7 [6 to 9] vs. 22 [18 to 27] %, (P < 0.001). Surgical conditions were rated comparably (P = 0.06). A subgroup of residents in training perceived surgical conditions to be better with the Tritube compared with the MLT (P = 0.006). Respiratory system compliance with the Tritube was higher at 61 [52 to 71] vs. 46 [41 to 51] ml cmH2O (P < 0.001), plateau pressure was lower at 14 [13 to 15] vs. 17 [16 to 18] cmH2O (P < 0.001), and change of end-expiratory lung volume was higher at 681 [463 to 849] vs. 414 [194 to 604] ml, (P = 0.023) for Tritube-FCV compared with MLT-VCV. CONCLUSION: During laryngeal surgery a Tritube improves visibility of the surgical site but not surgical conditions when compared with a MLT 6.0. FCV improves lung aeration and respiratory system compliance compared with VCV. TRIAL REGISTRY NUMBER: DRKS00013097.


Asunto(s)
Procedimientos Quirúrgicos Electivos/instrumentación , Glotis/diagnóstico por imagen , Enfermedades de la Laringe/cirugía , Máscaras Laríngeas , Respiración con Presión Positiva/instrumentación , Anciano , Anestesia General , Anestesia Intravenosa , Femenino , Glotis/cirugía , Humanos , Masculino , Persona de Mediana Edad , Volumen de Ventilación Pulmonar , Resultado del Tratamiento
10.
J Oral Maxillofac Surg ; 77(11): 2355-2361, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31077673

RESUMEN

PURPOSE: Surgical management, including the extent of surgery, for patients with parotid malignant tumors has been challenging. The aims of the present study were to identify the factors associated with survival, estimate the incidence of occult nodal and intraglandular metastases, and determine the predictive influence on overall and disease-free survival, with consideration of the surgical extent. PATIENTS AND METHODS: We implemented a retrospective cohort study and identified incident cases with parotid malignant tumors from 2003 to 2016 at a single quaternary medical care and cancer center. A medical record analysis was performed retrospectively of the patient and histopathologic data. The predictor variables were age; tumor grade; T stage; N stage; facial nerve palsy; perineural, vascular, and lymphovascular invasion; completion parotidectomy; elective neck dissection; and pN0 versus pN+. Overall and disease-free survival were evaluated as primary and secondary outcome variables. Data analysis was performed as a time-to-event analysis (Kaplan-Meier method). RESULTS: A total of 102 patients with parotid carcinoma had undergone surgery from 2003 to 2016 at the University Hospital Freiburg, Germany; 69 patients had undergone completion parotidectomy (total, 36; radical, 33). A total of 13 patients had occult intraparotideal lymph node metastases after elective completion parotidectomy. All the patients who had undergone elective neck dissection and clinically had had no nodal involvement (cN0) had had no pathologic lymph node metastases found (pN0). However, the predictive factors for cervical nodal involvement were high-grade tumors, locally advanced tumors (cT3-cT4), and the presence of intraparotideal nodal metastases. CONCLUSIONS: The rate of occult cervical metastases in the present study was surprisingly low (0%). However, owing to the various predictive factors, elective neck dissection should be performed for high-grade or locally advanced (stage T3-T4) parotid malignoma. Moreover, we highly recommend performing completion parotidectomy for all high-grade tumors and also for locally advanced (stage T3-T4) low-grade tumors, owing to the >12% of occult intraparotideal metastases found in the present study.


Asunto(s)
Metástasis Linfática , Disección del Cuello , Neoplasias de la Parótida , Alemania , Humanos , Ganglios Linfáticos , Estadificación de Neoplasias , Neoplasias de la Parótida/patología , Neoplasias de la Parótida/cirugía , Estudios Retrospectivos
14.
J Craniomaxillofac Surg ; 46(8): 1373-1378, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-29807754

RESUMEN

INTRODUCTION: To evaluate the influence of comorbidities and anemia on outcome and survival in patients with sinonasal carcinomas. MATERIALS AND METHODS: Review of medical records of 121 patients with carcinoma treated at a single quaternary medical care and cancer center between 2002 and 2015. Comorbidities were classified according to the age-adjusted Charlson comorbidity index (ACCI) scoring system. RESULTS: 71 patients were male, 50 were female. Median age was 65 years, and the median interval between tumor diagnosis and date of study inclusion was 71 months. The most common histological subtype was squamous cell carcinoma (n = 64). The median ACCI score was 2 and the most frequent ACCI score was 0 (n = 26). Mean overall survival was 52.2 months (ACCI 0-2) and 39.5 months (ACCI ≥ 3), respectively (p < 0.0001). Mean disease-free survival was 52.9 months (ACCI 0-2) and 45.5 months (ACCI ≥ 3), respectively (p = 0.026). Mean overall survival in patients without anemia was 49.5 months, compared with 39.8 months in patients with anemia (p = 0.043). CONCLUSION: Comorbidity is an independent risk factor on overall, disease-free and disease-specific survival in patients with sinonasal carcinoma. Anemia is associated with shorter overall survival. This is the first study evaluating comorbidity using the ACCI scoring system and focusing on patients with sinonasal carcinoma.


Asunto(s)
Anemia/epidemiología , Neoplasias Nasales/epidemiología , Neoplasias de los Senos Paranasales/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Anemia/mortalidad , Carcinoma de Células Escamosas/epidemiología , Carcinoma de Células Escamosas/mortalidad , Carcinoma de Células Escamosas/cirugía , Comorbilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Nasales/diagnóstico , Neoplasias Nasales/mortalidad , Neoplasias Nasales/cirugía , Neoplasias de los Senos Paranasales/diagnóstico , Neoplasias de los Senos Paranasales/mortalidad , Neoplasias de los Senos Paranasales/cirugía , Pronóstico , Estudios Retrospectivos , Análisis de Supervivencia , Resultado del Tratamiento , Adulto Joven
15.
Sci Rep ; 8(1): 5321, 2018 03 28.
Artículo en Inglés | MEDLINE | ID: mdl-29593307

RESUMEN

Cancer research of immune-modulating mechanisms mainly addresses the role of tumor-infiltrating immune cells. Mechanisms modulating the adaptive immune system at the primary activation site - the draining lymph node (LN) - are less investigated. Here we present tumor-caused histomorphological changes in tumor draining LNs of breast cancer patients, dependent on the localization (sentinel LN vs. non-sentinel LN), the tumor size, the intrinsic subtype and nodal metastatic status. The quantitative morphological study was conducted in breast cancer patients with at least one sentinel LN and no neoadjuvant therapy. All LNs were annotated considering to their topographical location, stained for IgD/H&E, digitized and quantitatively analyzed. In 206 patients, 394 sentinels and 940 non-sentinel LNs were categorized, comprising 40758 follicles and 7074 germinal centers. Subtype specific immunomorphological patterns were detectable: Follicular density was higher in LNs of Her2 enriched hormone receptor positive and triple-negative breast cancers whereas hormone receptor positive breast cancers showed more macrophage infiltrations in the LN cortex. Follicles are rounder in metastatic LNs and non-sentinel LNs. The identified immunomorphological changes reflect different underlying immunomodulations taking place in the tumor-draining LNs and should therefore be considered as possible prognostic and predictive markers for LN metastasis and therapy associated immunomodulation.


Asunto(s)
Neoplasias de la Mama/inmunología , Neoplasias de la Mama/patología , Inmunomodulación , Ganglios Linfáticos/inmunología , Ganglios Linfáticos/patología , Adulto , Anciano , Anciano de 80 o más Años , Biomarcadores de Tumor , Neoplasias de la Mama/metabolismo , Femenino , Centro Germinal , Humanos , Inmunohistoquímica , Inmunofenotipificación , Ganglios Linfáticos/metabolismo , Metástasis Linfática , Macrófagos/inmunología , Macrófagos/metabolismo , Macrófagos/patología , Persona de Mediana Edad , Estadificación de Neoplasias , Biopsia del Ganglio Linfático Centinela
16.
Eur Arch Otorhinolaryngol ; 275(4): 997-1003, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29478078

RESUMEN

PURPOSE: To evaluate the health-related quality of life (QOL) in patients with major salivary gland carcinoma (MSGC). METHODS: 45 patients with MSGC completed the University of Washington Quality of Life (UWQOL) questionnaire. Results and factors influencing quality of life were analyzed using Mann-Whitney U test. RESULTS: 24 patients were male, 21 patients were female, and median age was 57 years. 33 patients presented with early stage (UICC stage I or II) cancer. All patients had surgery as initial therapy. The UWQOL domains with the worst results were 'appearance', 'activity' and 'anxiety'. Factors influencing QOL were sex, tumor stage, comorbidities, follow-up time, tumor grade, postoperative radiation therapy and facial nerve dysfunction. CONCLUSIONS: Diagnosis and treatment of MSGC has influence on overall QOL. Postoperative radiation has the greatest impact on QOL. This is one of the largest study evaluating QOL in patients with salivary gland carcinoma using the UWQOL.


Asunto(s)
Carcinoma , Calidad de Vida , Neoplasias de las Glándulas Salivales , Adulto , Anciano , Carcinoma/epidemiología , Carcinoma/patología , Carcinoma/psicología , Carcinoma/terapia , Femenino , Alemania/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Estadificación de Neoplasias , Radioterapia/estadística & datos numéricos , Neoplasias de las Glándulas Salivales/epidemiología , Neoplasias de las Glándulas Salivales/patología , Neoplasias de las Glándulas Salivales/psicología , Neoplasias de las Glándulas Salivales/terapia , Glándulas Salivales/patología , Factores Sexuales , Estadísticas no Paramétricas , Procedimientos Quirúrgicos Operativos/estadística & datos numéricos , Encuestas y Cuestionarios
17.
Ear Hear ; 39(1): 131-138, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-28671917

RESUMEN

OBJECTIVES: One reason for insufficient hearing improvement with a distinct air-bone gap after ossiculoplasty with implantation of partial or total ossicular replacement prostheses can be the dislocation or minimal shifting of the prosthesis. The aim of this study was the simulation of common clinical borderline situations with minimal shifting of the prosthesis in temporal bone specimens after ossiculoplasty. It was furthermore the goal to identify these specific situations through imaging by cone beam computed tomography (cbCT) and direct visual inspection using the operation microscope. Additionally, the functional status was evaluated using laser-Doppler vibrometry (LDV). DESIGN: We used a total of four temporal bone specimens for this study. A reconstruction with a partial ossicular replacement prostheses was performed in three specimens and with a total ossicular replacement prostheses in one specimen, with good initial acoustic properties. Subsequently, one specific type of prosthesis failure was simulated in each specimen, respectively, by minimally shifting, tilting, or bending the prostheses from their initial positions. These changes were introduced step-by-step until a borderline situation just short of complete acoustic decoupling was reached. Each step was examined using both LDV and cbCT and observed through the operation microscope. RESULTS: LDV was able to quantify the mechanic function of the ossicular chain after most of the manipulation steps by demonstrating the effect of any shifting of the prosthesis on the middle ear transfer function. However, in some situations, the middle ear transfer function was better with a visually more advanced failure of the prosthesis. In addition, cbCT showed most of the steps with excellent resolution and was able to delineate changes in soft tissue (e.g., cartilage covering). CONCLUSION: cbCT seems to be a promising imaging technique for middle ear problems. As cbCT and LDV exhibited slightly different advantages and disadvantages regarding the demonstration of borderline situations, the combination of both techniques allowed for a more precise evaluation of middle ear reconstructions. Knowledge of the specific characteristics of these methods and their possible combination might help otologists and otosurgeons to refine indications for revision surgery and improve their personal patient counseling.


Asunto(s)
Tomografía Computarizada de Haz Cónico , Prótesis Osicular , Reemplazo Osicular , Hueso Temporal/diagnóstico por imagen , Osículos del Oído/diagnóstico por imagen , Osículos del Oído/fisiología , Osículos del Oído/cirugía , Humanos , Falla de Prótesis , Membrana Timpánica/fisiología
18.
J Allergy Clin Immunol ; 141(2): 730-740, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-28554560

RESUMEN

BACKGROUND: A subgroup of patients with common variable immunodeficiency (CVID) experience immune dysregulation manifesting as autoimmunity, lymphoproliferation, and organ inflammation and thereby increasing morbidity and mortality. Therefore treatment of these complications demands a deeper comprehension of their cause and pathophysiology. OBJECTIVES: On the basis of the identification of an interferon signature in patients with CVID with secondary complications and a skewed follicular helper T-cell differentiation in defined monogenic immunodeficiencies, we sought to determine the profile of CD4 memory T cells in blood and secondary lymphatic tissues of these patients. METHODS: We quantified TH1/TH2/TH17 CD4 memory T cells in blood and lymph nodes of patients with CVID using flow cytometry, analyzed their function, and correlated all findings to the burden of immune dysregulation. RESULTS: Patients with CVID with immune dysregulation had a skewed memory CD4 T-cell differentiation toward a CXCR3+CCR6- TH1 phenotype both in blood and lymph nodes. Consistent with our phenotypic findings, we observed a higher IFN-γ production in peripheral CD4 memory T cells and lymph node-derived follicular helper T cells of patients with CVID compared with those of healthy control subjects. Increased IFN-γ production was accompanied by a poor germinal center output, an accumulation of T-box transcription factor (T-bet)+ B cells in lymph nodes, and an accumulation of T-bet+CD21low B cells in peripheral blood of affected patients. CONCLUSION: Identification of excessive IFN-γ production by blood and lymph node-derived T cells of patients with CVID with immune dysregulation will offer new therapeutic avenues for this subgroup. CD21low B cells might serve as a marker of this IFN-γ-associated dysregulation.


Asunto(s)
Inmunodeficiencia Variable Común/inmunología , Memoria Inmunológica , Interferón gamma/inmunología , Receptores de Complemento 3d/inmunología , Células TH1/inmunología , Adulto , Inmunodeficiencia Variable Común/sangre , Inmunodeficiencia Variable Común/patología , Femenino , Humanos , Interferón gamma/sangre , Recuento de Linfocitos , Masculino , Persona de Mediana Edad , Receptores de Complemento 3d/sangre , Proteínas de Dominio T Box/sangre , Proteínas de Dominio T Box/inmunología , Células TH1/metabolismo , Células TH1/patología
19.
Eur Arch Otorhinolaryngol ; 274(3): 1651-1657, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-27888340

RESUMEN

This study aimed at evaluating the influence of comorbidities on outcome and survival in patients with carcinoma of the major salivary glands. Medical records of 109 patients with carcinoma of the major salivary glands treated at a single quaternary medical care and cancer center between 2003 and 2015 were reviewed. Comorbidities were classified according to the Age-Adjusted Charlson Comorbidity Index (ACCI) scoring system. 59 patients were males, 50 were females. Median age was 69 years and the median interval between tumor diagnosis and date of study inclusion was 71 months. Most carcinoma arose in the parotid gland (90 patients), and most patients presented with T 1 (25) or T 2 (37) cancer. Mean ACCI score was 2.9, and the most frequent ACCI score was 4. Mean overall survival was 119 months (ACCI 0-3) and 55 months (ACCI score >4), respectively (p = 0.005). Mean disease-free survival (ACCI 0-3) was 110 and 58 months (ACCI > 4), respectively (p = 0.02). Survival was significantly improved in low grade tumors, lower T and UICC stage and lymph node-negative patients. Sex, age, history of smoking and resection margins had no influence on overall survival. High comorbidity is an independent risk factor on overall and disease-free survival in patients with major salivary gland carcinoma. This is the first study evaluating comorbidity using the ACCI scoring system in this group of patients.


Asunto(s)
Carcinoma/complicaciones , Carcinoma/diagnóstico , Neoplasias de las Glándulas Salivales/complicaciones , Neoplasias de las Glándulas Salivales/diagnóstico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma/mortalidad , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Estadificación de Neoplasias , Pronóstico , Estudios Retrospectivos , Factores de Riesgo , Neoplasias de las Glándulas Salivales/mortalidad , Tasa de Supervivencia , Adulto Joven
20.
Water Sci Technol ; 74(10): 2280-2296, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27858785

RESUMEN

Micropollutant pathways were studied for the Swist river basin (Western Germany). The aim was to verify the effectiveness of a monitoring approach to detect micropollutants entering the river. In a separate sewer system, water was frequently found to be contaminated with micropollutants. Improper connections of sewage canals to the stormwater network seemed to be the cause of pollution. Wastewater treatment plants (WWTPs) exerted the largest influence on micropollutants for the receiving river. During a flu outbreak, antibiotics in the Swist stemming from WWTPs increased remarkably. Elevated levels of pharmaceuticals were measured in discharges from a combined sewer overflow (CSO). The study showed that the pharmaceutical load of a CSO was significantly reduced by advanced treatment with a retention soil filter. Painkillers, an anticonvulsant and beta blockers were the most often detected pharmaceuticals in the sewage of urban areas. Herbicides, flame retardants and industrial compounds were also observed frequently. On cropland, Chloridazon and Terbuthylazine compounds were often found in landscape runoff. Fungicides and insecticides were the most frequent positive findings in runoff from orchards. The paper shows that a coherent approach to collecting valid information regarding micropollutants and to addressing relevant pathways as a basis for appropriate management strategies could be established.


Asunto(s)
Preparaciones Farmacéuticas/análisis , Ríos/química , Contaminantes Químicos del Agua/análisis , Monitoreo del Ambiente , Filtración , Retardadores de Llama/análisis , Alemania , Plaguicidas/análisis , Aguas del Alcantarillado , Suelo , Eliminación de Residuos Líquidos/métodos
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